they'll be up in columbus later today. >> tracie potts in cincinnati, stay warm out there. >>> there was anger and frustration in florida where voters lined up to cast absentee ballots after being cut off from the early voting deadline on saturday. investigative correspondent michael itzkoff explains what happened there and other potential election problems. >> reporter: frustrated voters outside the miami-dade election office, they had come after the county announced it would open its doors to provide and accept absentee ballots. but so many voters showed up that election officials were overwhelmed. they shut their doors, then decided to reopen. the democratic party sued to extend early voting after some voters were stuck onlines for hours. >> i'm a little bit upset. you have, like, what, five hours now. >> reporter: election officials are bracing for lots of potential voting problems on tuesday, especially in the key battleground states. in ohio, experts say because of confusion over new absentee ballot rules, more than 200,000 voters may be forced to cast provisional ballots that